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Microsoft KB Archive/924171

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Knowledge Base

Error event ID 116 is logged in the Application log every time that you start a server that is running Exchange 2000 Server

Article ID: 924171

Article Last Modified on 9/6/2006


  • Microsoft Exchange 2000 Server Standard Edition
  • Microsoft Exchange 2000 Enterprise Server


When you start a server that is running Microsoft Exchange 2000 Server, the following event is logged in the Application log: Event Type: Error
Event Source: EXOLEDB
Event Category: Events
Event ID: 116
Date: date
Time: time
User: N/A
Computer: ServerName
Description: Microsoft Exchange OLEDB was unable to initialize event system correctly. Support for store event may have been disabled. HRESULT = 0x8000ffff.


This problem may occur if duplicate StoreEvents system folders are present in Exchange 2000 Server.


To troubleshoot this problem, determine whether duplicate StoreEvents system folders exist. To do this, follow these steps:

  1. Start a Web browser such as Microsoft Internet Explorer.
  2. Visit the following Microsoft Outlook Web Access Web address:


    In this Web address, replace ServerName with the name of the Exchange server.
  3. Examine the contents of the Folders pane to determine whether duplicate StoreEvents{GUID} folders are listed.

    Note Duplicate StoreEvents{GUID} folders have the same GUID.
  4. If duplicate StoreEvents{GUID} folders appear, expand each StoreEvents{GUID} folder to determine whether each StoreEvents{GUID} folder contains the following subfolders:
    • globalevents
    • internal
  5. Perform one of the following actions, as appropriate for your situation:
    • If you receive an error message when you try to expand a particular StoreEvents{GUID} folder, remove that folder.
    • If a particular StoreEvents{GUID} folder does not contain both subfolders that are listed in step 4, remove that folder.
    • If both StoreEvents{GUID} folders contain the subfolders that are listed in step 4, remove the StoreEvents{GUID} folder that appears last in the folder list.
    To remove a StoreEvents{GUID} folder, right-click StoreEvents{GUID}, and then click Delete. Then, click OK to confirm the removal of the folder.

Note If you cannot remove the StoreEvents{GUID} folder from the Web browser, remove the folder by using the Exchange System Manager tool. To do this, follow these steps:

  1. Start Exchange System Manager To do this, click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
  2. In Exchange System Manager, expand Folders, right-click Public Folders, and then click View System Folders.
  3. Expand Public Folders, right-click the StoreEvents{GUID} system folder that you want to remove, and then click Delete.
  4. When you receive the following message, click Yes:

    The subfolders in this folder will also be deleted. Are you sure you want to delete the 'StoreEvents{GUID}' folder?

After you remove the duplicate StoreEvents{GUID} system folder, dismount and then mount the public folder store. Then, restart the computer to determine whether event ID 166 is logged in the Application log.


For more information, click the following article number to view the article in the Microsoft Knowledge Base:

316622 Event sinks do not function correctly if the SystemMailbox{GUID} mailbox is absent from a mailbox store in Exchange Server 2003 or in Exchange 2000 Server

Additional query words: XADM

Keywords: kbtshoot kbeventlog kbprb KB924171